U.S. patent number 11,245,867 [Application Number 17/143,221] was granted by the patent office on 2022-02-08 for video conference system.
This patent grant is currently assigned to BenQ Corporation. The grantee listed for this patent is BENQ CORPORATION. Invention is credited to Chin-Fu Chiang, Chia-Nan Shih, Ron-Kun Tseng, Chen-Chi Wu, Chuang-Wei Wu, Lin-Yuan You.
United States Patent |
11,245,867 |
Shih , et al. |
February 8, 2022 |
Video conference system
Abstract
A video conference system including a first transmitter device
and a receiver device is provided. The first transmitter device
transmits a first video data. The receiver device includes a
receiver control unit configured to assign a first identification
code to the first transmitter device. The receiver control unit
combines the first video data and a first identification image
corresponding to the first identification code as a first combined
video data and the receiver control unit outputs the first combined
video data to the display device. Through the present invention,
the conference participants can quickly identify which presenter is
providing the video signal source corresponding to a particular
frame on the split screen, and can raise questions to the right
person.
Inventors: |
Shih; Chia-Nan (Taipei,
TW), Wu; Chen-Chi (Taipei, TW), You;
Lin-Yuan (Taipei, TW), Chiang; Chin-Fu (Taipei,
TW), Tseng; Ron-Kun (Taipei, TW), Wu;
Chuang-Wei (Taipei, TW) |
Applicant: |
Name |
City |
State |
Country |
Type |
BENQ CORPORATION |
Taipei |
N/A |
TW |
|
|
Assignee: |
BenQ Corporation (Taipei,
TW)
|
Family
ID: |
1000006099286 |
Appl.
No.: |
17/143,221 |
Filed: |
January 7, 2021 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20210211603 A1 |
Jul 8, 2021 |
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Foreign Application Priority Data
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Jan 7, 2020 [CN] |
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202010014552.3 |
Jan 7, 2020 [CN] |
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202010014560.8 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04L
65/601 (20130101); H04N 21/647 (20130101); H04N
21/2265 (20130101); H04N 7/15 (20130101); H04N
5/44504 (20130101); G06F 21/73 (20130101) |
Current International
Class: |
H04N
7/15 (20060101); H04N 5/445 (20110101); G06F
21/73 (20130101); H04N 21/226 (20110101); H04N
21/647 (20110101) |
Field of
Search: |
;348/14.01-14.16
;715/753 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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101022529 |
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Aug 2007 |
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CN |
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104106037 |
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Oct 2014 |
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CN |
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106879113 |
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Jun 2017 |
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CN |
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110460890 |
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Nov 2019 |
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CN |
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201528155 |
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Jul 2015 |
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TW |
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2012088419 |
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Jun 2012 |
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WO |
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2017117278 |
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Jun 2017 |
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WO |
|
Other References
Office action of counterpart application by Taiwan IP Office dated
Dec. 4, 2020. cited by applicant .
Office action of counterpart application by EPO dated May 19, 2021.
cited by applicant .
Office action of counterpart application by EPO dated May 20, 2021.
cited by applicant .
Office action of counterpart application by Taiwan IP Office dated
Mar. 17, 2021. cited by applicant.
|
Primary Examiner: Ramakrishnaiah; Melur
Claims
What is claimed is:
1. A video conference system, comprising: a first transmitter
device configured to transmit a first video data; a receiver
device, comprising a receiver control unit configured to assign a
first identification code to the first transmitter device; wherein
the source of the first video data is an information processing
device, the first transmitter device is connected to the
information processing device; wherein the receiver control unit
combines the first video data and a first identification image
corresponding to the first identification code as a first combined
video data and the receiver control unit outputs the first combined
video data to a display device; wherein when the first transmitter
device transmits the first video data to a second transmission
module of the receiver device, the first transmitter device
generates the first identification image corresponding to the first
identification code; and wherein the first transmitter device
comprises a first transmitter control unit and a first transmission
module, the first transmitter control unit of the first transmitter
device is configured to receive the first video data, and the first
transmission module is configured to transmit the first video data,
the second transmission module is configured to selectively
establish connection with the first transmission module to receive
the first video data, wherein when the second transmission module
establishes connection with the first transmission module, the
receiver control unit assigns the first identification code to the
first transmitter device.
2. The video conference system according to claim 1, wherein when
the first transmission module transmits the first video data to the
second transmission module, the receiver control unit sends a
prompt instruction to request a first indication device of the
first transmitter device to show the first identification
image.
3. The video conference system according to claim 1, wherein the
video conference system further comprises a second transmitter
device comprising a second transmitter control unit and a third
transmission module, the second transmitter control unit is
configured to receive a second video data, and the third
transmission module is configured to transmit the second video
data, wherein when the second transmission module of the receiver
device establishes connection with the third transmission module,
the receiver control unit of the receiver device assigns a second
identification code to the second transmitter device, wherein when
the third transmission module transmits the second video data to
the second transmission module, the receiver control unit combines
the second video data and a second identification image
corresponding to the second identification code as a second
combined video data, and the receiver control unit combines the
first combined video data and the second combined video data as a
split screen video data and outputs the split screen video data to
the display device.
4. The video conference system according to claim 1, wherein when
the first transmission module stops transmitting the first video
data to the second transmission module, the receiver control unit
cancels the corresponding relation between the first identification
code and the first transmitter device.
5. The video conference system according to claim 4, wherein the
first identification image is a first color, and when the receiver
control unit requests the first transmitter device to show the
first identification image, a first indication device on the first
transmitter device shows the first color.
6. The video conference system according to claim 1, wherein when
the first combined video data is shown on the display device, the
first combined video data corresponds to a first video region and a
first identification region adjacent to the first video region, the
first video region shows the first video data, and the first
identification region shows the first identification image.
7. A video conference system, comprising: a first transmitter
device configured to transmit a first video data and a first
identification code; a receiver device, comprising a receiver
control unit configured to combine the first video data and a first
identification image corresponding to the first identification code
as a first combined video data and output the first combined video
data to a display device; wherein the source of the first video
data is an information processing device, the first transmitter
device is connected to the information processing device; and
wherein the first transmitter device comprises a first transmitter
control unit and a first transmission module, the first transmitter
control unit is configured to receive the first video data, and the
first transmission module is configured to transmit the first video
data, the receiver device further comprises a second transmission
module configured to selectively establish connection with the
first transmission module to receive the first video data, wherein
when the second transmission module establishes connection with the
first transmission module, the first transmitter device transmits
the first identification code to the receiver control unit.
8. The video conference system according to claim 7, wherein the
video conference system further comprises a second transmitter
device comprising a second transmitter control unit and a third
transmission module, the second transmitter control unit is
configured to receive a second video data, and the third
transmission module is configured to transmit the second video
data, wherein when the second transmission module of the receiver
device establishes connection with the third transmission module,
the receiver control unit reads a second identification code of the
second transmitter device, wherein when the third transmission
module transmits the second video data to the second transmission
module, the receiver control unit combines the second video data
and a second identification image corresponding to the second
identification code as a second combined video data, and the
receiver control unit combines the first combined video data and
the second combined video data as a split screen video data and
outputs the split screen video data to the display device, wherein
when the second combined video data is shown on the display device,
the second combined video data corresponds to a second video region
and a second identification region adjacent to the second video
region, the second video region shows the second video data, and
the second identification region shows the second identification
image.
9. The video conference system according to claim 7, wherein the
first identification code is selected from a group consisting of a
hardware serial number, a user inputted information and a network
address.
10. The video conference system according to claim 7, wherein the
information processing device executes an operating system, and the
first identification code is a user information provided by the
operating system.
11. The video conference system according to claim 7, wherein when
the first combined video data is shown on the display device, the
first combined video data corresponds to a first video region and a
first identification region adjacent to the first video region, the
first video region shows the first video data, and the first
identification region shows the first identification image.
12. A video conference system, comprising: a first transmitter
device, comprising a first transmitter control unit configured to
combine a first video data and a first identification image
corresponding to a first identification code as a first combined
video data, the first transmitter device transmitting the first
combined video data; a second transmitter device, comprising a
second transmitter control unit configured to combine a second
video data and a second identification image corresponding to a
second identification code as a second combined video data, the
second transmitter device transmitting the second combined video
data; and a receiver device configured to receive the first
combined video data and the second combined video data, combine the
first combined video data and the second combined video data as a
split screen video data and output the split screen video data to
the display device; wherein the source of the first video data is
an first information processing device, the source of the second
video data is an second information processing device, the first
transmitter device is connected to the first information processing
device, the second transmitter device is connected to the second
information processing device, a first transmission module of the
first transmitter device is configured to transmit the first video
data, a second transmission module of the receiver device is
configured to selectively establish connection with the first
transmission module to receive the first video data, a third
transmission module of the second transmitter device is configured
to transmit the second video data, the second transmission module
of the receiver device is configured to selectively establish
connection with the third transmission module to receive the second
video data, the first transmitter device generates the first
identification image corresponding to the first identification
code, the second transmitter device generates the second
identification image corresponding to the second identification
code.
13. The video conference system according to claim 12, wherein when
the first combined video data is shown on the display device, the
first combined video data corresponds to a first video region and a
first identification region adjacent to the first video region, the
first video region shows the first video data, and the first
identification region shows the first identification image.
14. A video conference system, comprising: a first transmitter
device, comprising: a first transmitter control unit configured to
receive a first video data; and a first transmission module
configured to transmit the first video data; and a receiver device
coupled to a display device, the receiver device comprising: a
second transmission module configured to selectively establish
connection with the first transmission module to receive the first
video data; and a receiver control unit configured to output the
first video data to a display device, wherein when the first video
data is shown on the display device, the first video data
corresponds to a first video region, and the receiver control unit
receives a user operation position provided by a user input device;
wherein when the receiver control unit determines that the user
operation position is located in the first video region, the
receiver control unit sends a prompt instruction to the first
transmitter device for enabling the first transmitter device to
emit a first indication signal.
15. The video conference system according to claim 14, wherein the
video conference system further comprises a second transmitter
device comprising a second transmitter control unit and a third
transmission module, the second transmitter control unit is
configured to receive a second video data, the third transmission
module is configured to transmit the second video data, the second
transmission module is further configured to optionally establish
connection with the third transmission module to receive the second
video data, and the receiver control unit is further configured to
output the second video data to the display device, wherein when
the second video data is shown on the display device, the second
video data corresponds to a second video region, and the first
video region and the second video region are shown in the form of
split screen, wherein when the receiver control unit determines
that the user operation position is located in the second video
region, the receiver control unit sends a prompt instruction to the
second transmitter device for enabling the second transmitter
device to emit a second indication signal different from the first
photoacoustic signal.
16. The video conference system according to claim 15, wherein the
first indication signal and the second indication signal are
photoacoustic signal.
Description
This application claims the benefit of People's Republic of China
application Serial No. 202010014552.3, filed Jan. 7, 2020, and
People's Republic of China application Serial No. 202010014560.8,
filed Jan. 7, 2020 the subject matters of which are incorporated
herein by reference.
BACKGROUND OF THE INVENTION
Field of the Invention
The disclosure relates in general to a video conference system
capable of identifying video signal source.
Description of the Related Art
Conventionally, when a presenter wants to operate an information
processing device (such as a notebook computer) to perform
presentation using a display device, the presenter have to use a
video signal line (such as a HDMI video transmission line) to
connect the information processing device and the display device
(such as a projector or large-sized TV), such that the presentation
image data outputted from the information processing device can be
transmitted to the display device, and the display device
accordingly shows the presentation image data. However, the above
method for connecting the information processing device and the
display device using a wired video signal line is subjected to many
restrictions. For example, when the presenter wants to show the
presentation material stored in another information processing
device, the presenter should firstly remove the video signal line
from the original information processing device and then connects
the video signal line to another information processing device. By
doing so, the conference will inevitably be interrupted.
To resolve the above operation inconvenience, a multi-user wireless
presentation system is provided in the market. The multi-user
wireless presentation system normally includes several transmitter
devices and a receiver device. A transmitter device is connected to
the video output port of each conference participant's information
processing device, and the receiver device is connected to the
video input port of a display device. When only a presenter presses
the projection button on a transmitter device, one of the
transmitter devices will perform wireless image data transmission
with the receiver device and the display device will only show the
image data outputted from one information processing device.
However, when many presenters concurrently press the projection
buttons on their transmitter devices, the several transmitter
devices will perform wireless image data transmission with the
receiver device, and the display device will show the image data
outputted from the information processing devices in the form of
split screen. Under the split-screen display state, the conference
participants may easily get confused and are unable to identify
which presenter's information processing device is providing the
video signal source corresponding to a particular frame on the
split screen shown on the display device. Therefore, when a
conference participant has questions regarding a particular frame
of the split screen, the conference participant needs to
additionally inquire which presenter is providing the presentation
material shown on the particular frame of the split screen before
the conference participant can raise question to the right
person.
SUMMARY OF THE INVENTION
The invention is directed to a video conference system for
identifying video signal source capable of effectively resolving
the above problems encountered in the prior art.
According to a first aspect of the present invention, a video
conference system is provided. The video conference system includes
a first transmitter device and a receiver device. The first
transmitter device transmits a first video data. The receiver
device includes a receiver control unit configured to assign a
first identification code to the first transmitter device. The
receiver control unit combines the first video data and a first
identification image corresponding to the first identification code
as a first combined video data and the receiver control unit
outputs the first combined video data to a display device.
According to a second aspect of the present invention, a video
conference system is provided. The video conference system includes
a first transmitter device and a receiver device. The first
transmitter device transmits a first video data and a first
identification code. The receiver device includes a receiver
control unit configured to combine the first video data and a first
identification image corresponding to the first identification code
as a first combined video data and further output the first
combined video data to a display device.
According to a third aspect of the present invention, a video
conference system is provided. The video conference system includes
a first transmitter device, a second transmitter device and a
receiver device. The first transmitter device includes a first
transmitter control unit configured to combine a first video data
and a first identification image corresponding to a first
identification code as a first combined video data and the first
transmitter device transmits the first combined video data. The
second transmitter device includes a second transmitter control
unit configured to combine a second video data and a second
identification image corresponding to a second identification code
as a second combined video data and the second transmitter device
transmit the second combined video data. The receiver control unit
receives the first combined video data and the second combined
video data, combines the first combined video data and the second
combined video data as a split screen video data and outputs the
split screen video data to a display device.
According to a fourth aspect of the present invention, a video
conference system is provided. The video conference system includes
a first transmitter device and a receiver device. The first
transmitter device includes a first transmitter control unit and a
first transmission module. The first transmitter control unit is
configured to receive a first video data. The first transmission
module is configured to transmit the first video data. The receiver
device, coupled the display device, includes a second transmission
module and a receiver control unit. The second transmission module
is configured to selectively establish connection with the first
transmission module to receive the first video data. The receiver
control unit is configured to output the first video data to a
display device. When the first video data is shown on the display
device, the first video data corresponds to a first video region,
and the receiver control unit further receives a user operation
position provided by a user input device. When the receiver control
unit determines that the user operation position is located in the
first image region, the receiver control unit sends a prompt
instruction to the first transmitter device for enabling the first
transmitter device to emit a first photoacoustic signal.
The above and other aspects of the invention will become better
understood with regard to the following detailed description of the
preferred but non-limiting embodiment (s). The following
description is made with reference to the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a flowchart of a method for identifying video signal
source according to a first embodiment of the present
disclosure.
FIG. 2A and FIG. 2B is an example of a detailed flowchart of the
method for identifying video signal source of FIG. 1.
FIG. 3 is a block diagram of a wireless presentation system
according to a first embodiment of the present disclosure.
FIG. 4A is a schematic diagram of an application scenario of the
wireless presentation system of FIG. 3.
FIG. 4B is a schematic diagram of an image region and an
identification region according to an embodiment of FIG. 4A.
FIG. 4C is a schematic diagram of an image region and an
identification region according to another embodiment of FIG.
4A.
FIG. 5 is a flowchart of a method for identifying video signal
source according to a second embodiment of the present
disclosure.
FIG. 6 is an example of a detailed flowchart of the method for
identifying video signal source of FIG. 5.
FIG. 7 is a flowchart of a method for identifying video signal
source according to a third embodiment of the present
disclosure.
FIG. 8 is a block diagram of a wireless presentation system
according to a third embodiment of the present disclosure.
FIG. 9 is a schematic diagram of an application scenario of the
wireless presentation system of FIG. 8.
FIG. 10 is a flowchart of a method for identifying video signal
source according to a fourth embodiment of the present
disclosure.
FIG. 11 is an example of a detailed flowchart of the method for
identifying video signal source of FIG. 10.
FIG. 12 is a block diagram of a wireless presentation system
according to a fourth embodiment of the present disclosure.
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, a flowchart of a method for identifying video
signal source according to a first embodiment of the present
disclosure is shown. Referring to FIG. 3, a block diagram of a
wireless presentation system 300 according to a first embodiment of
the present disclosure is shown. As shown in FIG. 1, the method for
identifying video signal source of the present disclosure includes
the following steps. In step 102, a first identification code is
assigned to a first transmitter device 310 by a receiver control
unit 324 of a receiver device 320. In step 104, a first video data
is transmitted by the first transmitter device 310. In step 106,
the first video data and a first identification image corresponding
to the first identification code are combined as a first combined
video data by the receiver control unit 324. In step 108, the first
combined video data is outputted to the display device 360 by the
receiver control unit 324.
As shown in FIG. 3, the wireless presentation system includes a
first transmitter device 310 and a receiver device 320, and may
selectively include a second transmitter device 330. The first
transmitter device 310 includes a first transmitter control unit
312 and a first transmission module 314. The first transmitter
control unit 312 is configured to receive a first video data Vid1
from the first video source 350. The first transmission module 314
is configured to transmit the first video data Vid1. Similarly, the
second transmitter device 330 includes a second transmitter control
unit 332 and a third transmission module 334. The second
transmitter control unit 332 is configured to receive a second
video data Vid2 from the second video source 352. The third
transmission module 334 is configured to transmit the second video
data Vid2. The receiver device 320 includes a second transmission
module 322 and a receiver control unit 324. The second transmission
module 322 may selectively establish a wireless transmission WL1
with the first transmission module 314 to receive the first video
data Vid1, and may selectively establish a wireless transmission
WL2 with the third transmission module 334 to receive the second
video data Vid2.
Referring to FIG. 2A and FIG. 2B, an example of a detailed
flowchart of the method for identifying video signal source of FIG.
1 is shown. In step 102, when the receiver device 320 establishes
connection with the first transmitter device 310, a first
identification code is assigned to the first transmitter device 310
by the receiver control unit 324, and details of step 102 include
steps 204.about.206 of FIG. 2A. In step 204, whether the receiver
device 320 has successfully established connection with the
transmitter device is determined. When the connection has been
successfully established, the method proceeds to step 206. In step
206, the sequence number of connection of the transmitter device is
recorded by the receiver device 320, and the identification code
corresponding to the color of the sequence number is assigned to
the transmitter device. In step 204, after the receiver device 320
and the first transmitter device 310 are connected to a power
source, the user can press the matched buttons on the receiver
device 320 and the first transmitter device 310, and the two
devices will try to establish connection with each other. After the
first transmission module 314 of the first transmitter device 310
establishes connection with the second transmission module 322 of
the receiver device 320, the method proceeds to step 206. In step
206, internal information of the receiver device 320 and the first
transmitter device 310 are mutually updated with each other, the
sequence number of connection of the first transmitter device 310
is recorded and the identification code corresponding to the color
of the sequence number is assigned to the transmitter device by the
receiver device 320. The first transmitter control unit 312 and the
receiver control unit 324 both pre-store a list of identification
codes and corresponding indicator colors. For example, an
identification code #1 is assigned to the first one of the
transmitter devices that has successfully established connection
with the receiver device 320 and the corresponding color of the
first identification image is red; an identification code #2 is
assigned to the second one of the transmitter devices that has
successfully established connection with the receiver device 320,
and the corresponding color of the second identification image is
green, and the rest can be obtained by the same analogy. Thus, when
the first transmitter device 310 is the first one of the
transmitter devices that has successfully established connection,
the receiver control unit 324 records that the first transmitter
device 310 has the first sequence number to establish connection
and assigns the identification code #1 to the first transmitter
device 310. Similarly, when the second transmitter device 330 is
afterwards connected to a power source and becomes the second one
of the transmitter devices that has successfully established
connection with the receiver device 320, the receiver control unit
324 records that the second transmitter device 330 has the second
sequence number to establish connection and assigns the
identification code #2 to the second transmitter device 330. By
looking up the list of identification codes and corresponding
indicator colors, the receiver control unit 324 can obtain that the
color of the first identification image corresponding to the
identification code #1 is red, and the color of the second
identification image corresponding to the identification code #2 is
green. In the present embodiment, the first identification image
and the second identification image are respectively exemplified by
red and green, but the disclosure is not limited thereto. For
example, the first identification image and the second
identification image can also be exemplified by numeric numbers "1"
and "2" or English alphabets "A" and "B".
Details of step 104 include step 208 of FIG. 2A. In step 208,
whether the transmitter device has transmitted a video data to the
receiver device 320 is determined. If yes, the method proceeds to
step 210. When the first transmission module 314 of the first
transmitter device 310 has established connection with the second
transmission module 322 of the receiver device 320 but the first
user has not yet pressed the projection button on the first
transmitter device 310, the first transmitter device 310 does not
transmit the first video data Vid1 to the receiver device 320.
After the first user presses the projection button on the first
transmitter device 310, the first transmitter device 310 starts to
transmit the first video data Vid1 to the receiver device 320.
Thus, the condition of step 208 is satisfied, and the method
proceeds to step 210. By the same analogy, after the third
transmission module 334 of the second transmitter device 330
establishes connection with the second transmission module 322 of
the receiver device 320, the second transmitter device 330 starts
to transmit the second video data Vid2 to the receiver device 320
when the second user presses the projection button on the second
transmitter device 330.
In the present embodiment as shown in FIG. 2A and FIG. 2B, the
method for identifying video signal source may selectively include
step 209. In step 209, whether there is more than one transmitter
device transmitting the video data to the receiver device 320 is
determined. If yes, the method proceeds to step 210; otherwise, the
method skips step 210. In step 209, the receiver control unit 324
can dynamically turn off the video combining circuit of the
receiver control unit to dynamically reduce the power consumption
of the receiver control unit 324 and achieve power saving. Step 209
has scenarios (1) and (2) disclosed below. Scenario (1): Both the
first transmitter device 310 and the second transmitter device 330
have already established connection with the receiver device 320,
but only the first transmitter device 310 is transmitting the first
video data Vid1 to the receiver device 320 and the entire screen of
the display device 360 is showing the first video data Vid1. Under
such circumstance, the conference participants can clearly identify
the presenter who is currently operating the first transmitter
device 310 outputting the first video data Vid1, and the receiver
control unit 324 does not need to show the corresponding color of
the identification code on the display device 360. For example, the
receiver control unit 324 can turn off the video combining circuit
of the receiver control unit 324 and skip step 210 to reduce the
power consumption of the receiver control unit 324. Scenario (2):
When both the first transmitter device 310 and the second
transmitter device 330 have already established connection with the
receiver device 320 and the first transmitter device 310 transmits
the first video data Vid1 to the receiver device and at the same
time the second transmitter device 330 transmits the second video
data Vid2 to the receiver device 320, the display device 360 shows
the first video data Vid1 and the second video data Vid2 in the
form of split screen. Under such circumstance, the conference
participants cannot clearly identify the video signal source, and
the receiver control unit 324 needs to show the corresponding color
of the identification code on the display device 360. For example,
the receiver control unit 324 turns on the video combining circuit
of the receiver control unit 324 and performs step 210.
Details of steps 106.about.108 include step 210 of FIG. 2A. In step
210, the corresponding color of the identification code is shown on
the display device 360 by the receiver device 320 according to the
identification code assigned to the transmitter device, and the
indicator on the transmitter device shows a light whose color
corresponds to the identification code. When the first transmitter
device 310 transmits the first video data Vid1 to the second
transmission module 322, the receiver control unit 324 combines the
first video data Vid1 and the first identification image (such as a
red identification image) as a first combined video data Vid_C1 and
outputs the first combined video data Vid_C1 to the display device
360. When the first combined video data Vid_C1 is shown on the
display device 360, as shown in FIG. 4A, the first combined video
data Vid_C1 corresponds to a first video region 462 and a first
identification region 464 adjacent to the first video region 462.
The first video region 462 shows the first video data Vid1, and the
first identification region 464 shows the first identification
image. The receiver control unit 324 sends a prompt instruction to
request the first indication device 316 of the first transmitter
device 310 to show the first identification image. In the present
embodiment, the receiver control unit 324 combines the first video
data Vid1 and a red identification image as the first combined
video data Vid_C1, such that the display device 360 shows a
corresponding red identification image, and the indicator on the
first transmitter device 310 shows a red light corresponding to the
identification code #1. By the same analogy, the receiver control
unit 324 combines the second video data Vid2 and a green
identification image as a second combined video data Vid_C2 and
outputs the second combined video data Vid_C2 to the display device
360, such that the display device 360 shows a corresponding green
identification image, and the second indication device 336 (such as
an indicator) on the second transmitter device 330 shows a green
light corresponding to the identification code #2.
Referring to FIGS. 4A.about.4B, a schematic diagram of an
application scenario of the wireless presentation system of the
present disclosure and a schematic diagram of an image region and
an identification region according to an embodiment are
respectively shown. The first video source 350 (such as a notebook
computer) operated by the first user P1 outputs a first video data
Vid1 to the first transmitter device 310, and the second video
source 352 (such as a notebook computer) operated by the second
user P2 outputs a second video data Vid2 to the second transmitter
device 330. The first transmitter device 310 and the second
transmitter device 330 both establish connection with the receiver
device 320. When the first transmitter device 310 is the first one
of the transmitter devices that has established connection with the
receiver device 320, an identification code #1 is assigned to the
first transmitter device 310. When the first combined video data
Vid_C1 is shown on the display device 360, the first combined video
data Vid_C1 corresponds to both the first video region 462 and the
first identification region 464 at the left half of the display
device 360. The first video region 462 is adjacent to the first
identification region 464, the first video region 462 shows the
first video data Vid1, and the first identification region 464
shows a red identification image corresponding to the
identification code #1. As shown in FIG. 4B, the first
identification region 464 is located at the top left corner of the
first video region 462, and a red block is shown at the top left
corner. By the same analogy, when the second transmitter device 330
is the second one of the transmitter devices that has established
connection with the receiver device 320, an identification code #2
is assigned to the second transmitter device 330. When the second
combined video data Vid_C2 is shown on the display device 360, the
second combined video data Vid_C2 corresponds to both the second
video region 466 and the second identification region 468 located
at the right half of the display device 360. The second video
region 466 is adjacent to the second identification region 468, the
second video region 466 shows the second video data Vid2, and the
second identification region 468 shows a green identification image
corresponding to the identification code #2. The second
identification region 468 is located at the top left corner of the
second video region 466, and a green block is shown at the top left
corner. As shown in FIG. 4B, the receiver control unit 324 assigns
the second identification code (such as an identification code #2)
to the second transmitter device 330, the second transmitter device
330 transmits the second video data Vid2, and the receiver control
unit 324 combines the second video data Vid2 and the second
identification image corresponding to the second identification
code (such as a green identification image) as a second combined
video data Vid_C2 and outputs the first combined video data Vid_C1
and the second combined video data Vid_C2 to the display device
360. The first combined video data Vid_C1 and the second combined
video data Vid_C2 are shown on the display device 360 in the form
of split screen. For example, the receiver control unit 324
combines the first combined video data Vid_C1 and the second
combined video data Vid_C2 as a split screen video data and outputs
the split screen video data to the display device 360.
Referring to FIG. 4C, a schematic diagram of an image region and an
identification region according to another embodiment is shown. The
first identification region 464 surrounds an outer periphery of the
first video region 462, and a red outline border is shown in the
outer periphery. The second identification region 468 surrounds an
outer periphery of the second video region 466, and a green outline
border is shown in the outer periphery.
The first transmitter device 310 has a first indicator 316 disposed
thereon, and the receiver control unit 324 sends a prompt
instruction to request the first indicator on the first transmitter
device 310 to show a red identification image. Under such
circumstance, the conference participants can clearly understand
the corresponding relation among the first video region 462, the
red identification image in the first identification region 464 and
the red identification image shown by the first indicator and
easily conclude that the video signal source of the first video
region 462 located at the left half of the display device 360 is
the first video source 350 operated by the first user. By the same
analogy, the second transmitter device 330 has a second indicator
336 disposed thereon, and the receiver control unit 324 sends a
prompt instruction to request the second indicator on the second
transmitter device 330 to show a green identification image. Under
such circumstance, the conference participants can clearly
understand the corresponding relation among the second video region
466, the green identification image shown in the second
identification region 468 and the green identification image shown
by the second indicator and easily conclude that the video signal
source of the second video region 466 at the right half of the
display device 360 is the second video source 352 operated by the
second user. In the present embodiment, the adjacency relation
between the first video region 462 and the first identification
region 464 is exemplified by the arrangement that the first
identification region 464 is at a corner or an outer periphery of
the first video region 462, but the disclosure is not limited
thereto.
In the first embodiment, the wireless presentation system of the
present disclosure may selectively perform the step of cancelling
the corresponding relation between the first identification code
and the first transmitter device 310 by the receiver control unit
324 when the first transmitter device 310 stops transmitting the
first video data Vid1 to the second transmission module 322.
Details of the step of cancelling the corresponding relation
between the first identification code and the first transmitter
device 310 include steps 212 and 216 of FIG. 2B. In step 212,
whether the transmitter device has stopped transmitting the video
data to the receiver device 320 is determined. If yes, the method
proceeds to step 216. In step 216, the receiver device 320 takes
back the identification code corresponding to the color of the
sequence number assigned to the transmitter device. For example,
the receiver control unit 324 takes back the identification code #1
previously assigned to the first transmitter device 310 and the red
identification image corresponding to the identification code #1.
Afterwards, when another transmitter device establishes connection
with the receiver device 320, the identification code #1 and its
corresponding red identification image are assigned to the newly
connected transmitter device.
In the first embodiment, the wireless presentation system of the
present disclosure may selectively perform step 214 of FIG. 2B to
determine whether the transmitter device is powered off. Thus, when
the first transmitter device 310 continues to transmit the first
video data Vid1 to the second transmission module 322 and the
transmitter device is not powered off, the receiver control unit
324 continues to output the first combined video data Vid_C1 to the
display device 360.
Referring to FIG. 5, a flowchart of a method for identifying video
signal source according to a second embodiment of the present
disclosure is shown. The method for identifying video signal source
according a second embodiment of the present disclosure can adopt
the hardware structure of the wireless presentation system as shown
in of FIG. 3 and only needs to modify the firmware programs of the
first transmitter control unit 312, the second transmitter control
unit 332 and the receiver control unit 324, such that the first
transmitter control unit 312, the second transmitter control unit
332 and the receiver control unit 324 together can perform the
steps of the method as shown in FIGS. 5.about.6. As shown in FIG.
5, the method for identifying frame signal source of the present
disclosure includes the following steps: In step 502: a first
identification code is transmitted to the receiver control unit 324
of the receiver device 320 by the first transmitter device 310. In
step 504, a first video data Vid1 is transmitted to the receiver
control unit 324 of the receiver device 320 by the first
transmitter device 310. In step 506, the first video data Vid1 and
a first identification image corresponding to the first
identification code are combined as a first combined video data
Vid_C1 by the receiver control unit 324. In step 508, the first
combined video data Vid_C1 is outputted to the display device 360
by the receiver control unit 324.
Referring to FIG. 6, an example of a detailed flowchart of the
method for identifying video signal source of FIG. 5 is shown. In
step 502, when the receiver device 320 establishes connection with
the first transmitter device 310, the first identification code is
transmitted to the receiver control unit 324 of the receiver device
320 by the first transmitter device 310, and the details of step
502 include steps 604.about.606 of FIG. 6. In step 604, whether the
receiver device 320 has established connection with the transmitter
device is determined. When the connection has been successfully
established, the method proceeds to step 606. In step 606, an
identification code with in-built color is transmitted to the
receiver control unit 324 of the receiver device 320 by the first
transmitter device 310. In step 604, after the receiver device 320
and the first transmitter device 310 are connected to a power
source, the user can press the matched buttons on the receiver
device 320 and the first transmitter device 310, and the two
devices will try to establish connection with each other. After the
first transmission module 314 of the first transmitter device 310
establishes connection with the second transmission module 322 of
the receiver device 320, the method proceeds to step 606, internal
information of the receiver device 320 and the first transmitter
device 310 are mutually updated to each other, and the first
identification code is transmitted to the receiver control unit 324
of the receiver device 320 by the first transmitter device 310. The
first transmitter control unit 312 and the receiver control unit
324 both pre-store a list of identification codes and corresponding
indicator colors. For example, an identification code #1 is
assigned to the first transmitter device 310 after manufacture and
the corresponding color of the first identification image is red;
an identification code #2 is assigned to the second transmitter
device 330 after manufacture and the corresponding color of the
second identification image is green; and the rest can be obtained
by the same analogy. Thus, after the first transmitter device 310
establishes connection with the receiver device 320, the receiver
control unit 324 records that the first transmitter device 310 has
the identification code #1. Similarly, afterwards, when the second
transmitter device 330 establishes connection with the receiver
device 320, the receiver control unit 324 records that the second
transmitter device 330 has the identification code #2. By looking
up the list of identification codes and corresponding indicator
colors, the receiver control unit 324 can obtain that the color of
the first identification image corresponding to the identification
code #1 is red, and the color of the second identification image
corresponding to the identification code #2 is green. In the
present embodiment, the first identification image and the second
identification image are respectively exemplified by red and green,
but the embodiment is not limited thereto. For example, the first
identification image and the second identification image can also
be exemplified by numeric numbers "1" and "2" or English alphabets
"A" and "B".
In the present embodiment, the first identification code of the
first transmitter device and the second identification code of the
second transmitter device can be exemplified by the color
identification code assigned to the corresponding transmitter
device after manufacture, but the embodiment is not limited
thereto. The first identification code can also be selected from a
group consisting of hardware serial number, user inputted
information and network address. For example, the first video
source 350 providing the first video data Vid1 is an information
processing device (such as a notebook computer) used by the first
user; the information processing device executes an operating
system (such as a Microsoft Windows); the first identification code
is a user information, such as "Peter", provided by the operating
system (such as a first user's personal information set in the
console of Microsoft Windows); the information processing device
transmits "Peter" as the first identification code to the first
transmitter device 310. Also, the source of the first video data
Vid1 is an information processing device (such as a notebook
computer) having a camera, and when the camera takes a picture of
the first user, the information processing device transmits the
first user's picture as the first identification code to the first
transmitter device 310. Also, the source of the first video data
Vid1 is an information processing device (such as a notebook
computer), and when the information processing device is connected
to the Internet and has a network IP address, the information
processing device transmits the network IP address as the first
identification code to the first transmitter device 310. Also, the
first transmitter device 310 has a hardware serial number after
manufacture, and the first identification code is the hardware
serial number after manufacture of the first transmitter device
310. Also, when the information processing device executes a
communication software (such as Line, Skype) and obtains the user's
personal information, such as "Peter", the information processing
device transmits "Peter" as the first identification code to the
first transmitter device 310. All of the above information capable
of identifying the information processing device can be used as the
first identification code. When the first identification code is
"Peter", the hardware serial number or the network IP address, the
first identification image is the image of these texts. When the
first identification code is the first user's picture, the first
identification image is the first user's picture.
Details of step 504 include step 608 of FIG. 6, whether the
transmitter device has transmitted the video data to the receiver
device 320 is determined. If yes, the method proceeds to step 610.
Details of step 608 are the same as details of step 208.
As shown in FIG. 6, the method for identifying video signal source
of the present embodiment may selectively include step 609. In step
609, whether there is more than one transmitter device transmitting
the video data to the receiver device is determined. If yes, the
method proceeds to step 610; otherwise, the method skips step 610.
Details of step 609 are the same as details of step 209.
Details of steps 506.about.508 include step 610 of FIG. 6. In step
610, the corresponding color of the identification code received
from the transmitter device is shown on the display device 360 by
the receiver device 320, and a light whose color corresponds to the
identification code is shown by the indicator on the transmitter
device. Details of step 610 are the same as details of step
210.
In the second embodiment, the wireless presentation system of the
present disclosure further performs step 612 of FIG. 6. In step
612, whether the transmitter device is powered off is determined.
Thus, when the first transmitter device 310 continues to transmit
the first video data Vid1 to the receiver device 320 and the
transmitter device is not powered off, the receiver control unit
324 continues to output the first combined video data Vid_C1 to the
display device 360.
Referring to FIG. 7, a flowchart of a method for identifying video
signal source according to a third embodiment of the present
disclosure is shown. Referring to FIG. 8, a block diagram of a
wireless presentation system 800 according to a third embodiment of
the present disclosure is shown. As shown in FIG. 7, the method for
identifying video signal source of the present disclosure includes
the following steps. In step 702, a first video data Vid1 is
transmitted to a receiver device 820 by a first transmitter device
810, and the first video data Vid1 is outputted to a display device
860 by the receiver device 820. The first video data Vid1
corresponds to the first video region 862 on the display screen of
the display device 860. In step 704, a user operation position is
provided by a user input device 870. In step 706, whether the user
operation position is located in the first video region 862 is
determined by a receiver control unit 824. In step 708, when it is
determined that the user operation position is located in the first
video region 862, the receiver control unit 824 sends a prompt
instruction to the first transmitter device 810 for enabling the
first transmitter device 810 to emit a first photoacoustic
signal.
As shown in FIG. 8, the wireless presentation system includes a
first transmitter device 810 and a receiver device 820, and may
selectively include a second transmitter device 830. The first
transmitter device 810 includes a first transmitter control unit
812, a first transmission module 814 and a first indication device
816. The first transmitter control unit 812 is configured to
receive a first video data Vid1 from the first video source 850,
and the first transmission module 814 is configured to transmit the
first video data Vid1. Similarly, the second transmitter device 830
includes a second transmitter control unit 832, a third
transmission module 834 and a second indication device 836. The
second transmitter control unit 832 is configured to receive a
second video data Vid2 from the second video source 852, and the
third transmission module 834 is configured to transmit the second
video data Vid2. The receiver device 820 includes a second
transmission module 822 and a receiver control unit 824. The second
transmission module 822 may selectively establish connection with
the first transmission module 814 to receive the first video data
Vid1 and may selectively establish connection with the third
transmission module 834 to receive the second video data Vid2. The
receiver control unit 824 is configured to output the first video
data Vid1 and the second video data Vid2 to the display device 860.
When the first video data Vid1 is shown on the display device 860,
the first video data Vid1 corresponds to the first video region
862, the second video data Vid2 corresponds to the second video
region 866, and both the first video region 862 and the second
video region 866 are shown in the form of split screen. The
receiver control unit 824 receives a user operation position
provided by the user input device 870.
Referring to FIG. 9, a schematic diagram of an application scenario
of the wireless presentation system of FIG. 8 is shown. In the
present embodiment, the user input device 870 is exemplified by a
touch panel of a large-sized TV for the user to press and touch,
but the embodiment is not limited thereto. The receiver control
unit 824 outputs the first video data Vid1 and the second video
data Vid2 to the display device 860. When the first video data Vid1
is shown on the display device 860, the first video data Vid1
corresponds to the first video region 862 at the left half of the
display device 860, and the second video data Vid2 corresponds to
the second video region 866 at the right half of the display device
860. The first video region 862 and the second video region 866 are
shown in the form of split screen. When the user applies a first
user operation Ipt1 (such as a press or touch) to the first video
region 862 at the left half of the display device 860, the touch
panel will provide relevant coordinate information of the user
operation position to the receiver control unit 824. When the
receiver control unit 824 receives a user operation position from
the user input device 870 and it is determined that the user
operation position is located in the first video region 862, the
receiver control unit 824 sends a prompt instruction to the first
transmitter device 810 for enabling the first indication device 816
of the first transmitter device 810 to emit a first photoacoustic
signal. For example, the indicator on the first transmitter device
810 emits a red light, or a beeper beeps once. Similarly, when the
user applies a second user operation Ipt2 (such as a press or
touch) to the second video region 866 at the right half of the
display device 860, the touch panel will provide relevant
coordinate information of the user operation position to the
receiver control unit 824. When the receiver control unit 824
receives a user operation position from the user input device 870
and it is determined that the user operation position is located in
the second video region 866, the receiver control unit 824 sends a
prompt instruction to the second transmitter device 830 for
enabling the second indication device 836 of the second transmitter
device 830 to emit a second photoacoustic signal. The second
photoacoustic signal is different from the first photoacoustic
signal. For example, the indicator on the second transmitter device
830 emits a green light, or a beeper beeps twice.
Referring to FIG. 10, a flowchart of a method for identifying video
signal source according to a fourth embodiment of the present
disclosure is shown. Referring to FIG. 12, a block diagram of a
wireless presentation system 1200 according to a fourth embodiment
of the present disclosure is shown. As shown in FIG. 10, the method
for identifying video signal source of the present disclosure
includes the following steps. In step 1002, a first video data and
a first identification image are combined as a first combined video
data by a first transmitter control unit of a first transmitter
device. The first identification image corresponds to the first
identification code of the first transmitter device. In step 1004,
the first combined video data is transmitted to the receiver
control unit of the receiver device by the first transmitter
device. In step 1006, the first combined video data is outputted to
a display device by the receiver control unit.
As shown in FIG. 12, the wireless presentation system includes a
first transmitter device 1210, a second transmitter device 1230 and
a receiver device 1220. The first transmitter device 1210 includes
a first transmitter control unit 1212, a first indication device
1216 and a first transmission module 1214. The first transmitter
control unit 1212 is configured to receive a first video data Vid1
from the first video source 1250. The first transmitter control
unit 1212 may selectively combine the first video data Vid1 and a
first identification image corresponding to the first
identification code as a first combined video data Vid_C1. The
first identification image corresponds to the first identification
code of the first transmitter device. The first transmission module
1214 is configured to transmit the first video data Vid1 or the
first combined video data Vid_C1. Similarly, the second transmitter
device 1230 includes a second transmitter control unit 1232, a
second indication device 1236 and a third transmission module 1234.
The second transmitter control unit 1232 is configured to receive a
second video data Vid2 from the second video source 1252. The
second transmitter control unit 1232 may selectively combine the
second video data Vid2 and a second identification image
corresponding to the second identification code as a second
combined video data Vid_C2. The second identification image
corresponds to the second identification code of the second
transmitter device. The third transmission module 1234 is
configured to transmit the second video data Vid2 or the second
combined video data Vid_C2. The receiver device 1220 includes the
second transmission module 1222 and the receiver control unit 1224.
The second transmission module 1222 may selectively establish a
wireless transmission WL1 with the first transmission module 1214
to receive the first video data Vid1 or the first combined video
data Vid_C1. The second transmission module 1222 also may
selectively establish a wireless transmission WL2 with the third
transmission module 1234 to receive the second video data Vid2 or
the second combined video data Vid_C2. When the receiver control
unit 1222 receives the first combined video data Vid_C1 and the
second combined video data Vid_C2 at the same time, the receiver
control unit 1224 outputs the first combined video data Vid_C1 and
the second combined video data Vid_C2 to the display device 360 on
which the first combined video data Vid_C1 and the second combined
video data Vid_C2 are shown in the form of split screen. For
example, the receiver control unit 1222 combines the first combined
video data Vid_C1 and the second combined video data Vid_C2 as a
split screen video data Vid_C3 and outputs the split screen video
data Vid_C3 to the display device 1260. In the present embodiment,
each of the first transmitter control unit 1212, the second
transmitter control unit 1232 and the receiver control unit 1222
has a combining circuit for combining the received combined video
data.
Referring to FIG. 11, an example of a detailed flowchart of the
method for identifying video signal source of FIG. 10 is shown.
Step 1002 of FIG. 10 includes step 1104 of FIG. 11; step 1004 of
FIG. 10 includes step 1108 of FIG. 11; step 1006 of FIG. 10
includes step 1112 of FIG. 11.
Refer to FIG. FIG. 11. In step 1104, the first transmitter control
unit 1212 is notified by the receiver control unit 1224 to combine
the first video data Vid1 and the first identification image as a
first combined video data Vid_C1. After the first transmission
module 1214 of the first transmitter device 1210 establishes
connection with the second transmission module 1222 of the receiver
device 1220, internal information of the receiver device 1220 and
the first transmitter device 1210 are mutually updated with each
other, and the first identification code is transmitted to the
receiver control unit 1224 of the receiver device 1220 by the first
transmitter device 1210. The first transmitter control unit 1212
and the receiver control unit 1224 both pre-store a list of
identification codes and corresponding indicator colors. For
example, an identification code #1 is assigned to the first
transmitter device 1210 after manufacture, and the corresponding
color of the first identification image is red; an identification
code #2 is assigned to the second transmitter device 1230 after
manufacture, and the corresponding color of the second
identification image is green; and the rest can be obtained by the
same analogy. Thus, when the first transmitter device 1210
establishes connection with the receiver device 1220, the receiver
control unit 1224 records that the first transmitter device 1210
has the identification code #1. Similarly, afterwards, when the
second transmitter device 1230 establishes connection with the
receiver device 1220, the receiver control unit 1224 records that
the second transmitter device 1230 has the identification code #2.
By looking up the internally pre-stored list of identification
codes and corresponding indicator colors, the receiver control unit
1224 can obtain that the color of the first identification image
corresponding to the identification code #1 is red, and the color
of the second identification image corresponding to the
identification code #2 is green. In the present embodiment, the
first identification image and the second identification image are
respectively exemplified by red and green, but the embodiment is
not limited thereto. For example, the first identification image
and the second identification image can also be exemplified by
numeric numbers "1" and "2" or English alphabets "A" and "B".
In step 1106, the second transmitter control unit 1232 is notified
by the receiver control unit 1224 to combine the second video data
Vid2 and the second identification image as a second combined video
data Vid_C2.
In step 1108, the first combined video data Vid_C1 is transmitted
to the receiver control unit 1224 by the first transmitter device
1210. In step 1110, the second combined video data Vid_C2 is
transmitted to the receiver control unit 1224 by the second
transmitter device 1230. In step 1112, the first combined video
data Vid_C1 and the second combined video data Vid_C2 are combined
as a split screen video data Vid_C3 by the receiver control unit
1224, and the split screen video data Vid_C3 is further outputted
to the display device 1260 by the receiver control unit 1224.
As shown in FIG. 11, the method for identifying video signal source
of the present embodiment may selectively include steps 1102, 1114
and 1116. In step 1102, whether the first video data Vid1 from the
first transmitter device 1210 and the second video data Vid2 from
the second transmitter device 1230 are received by the receiver
control unit 1224 of the receiver device 1220 at the same time is
determined. If yes, the method proceeds to step 1104; otherwise the
method proceeds to step 1114. Through step 1102, whether there is
more than one transmitter device transmitting the video data to the
receiver device 1220 is determined by the receiver control unit
1224. Steps 1114.about.1116 have scenarios (1) and (2) disclosed
below. Scenario (1): Both the first transmitter device 1210 and the
second transmitter device 1230 have established connection with the
receiver device 1220 but only the first transmitter device 1210 is
transmitting the first video data Vid1 to the receiver device 1220
and the entire screen of the display device 1260 is showing the
first video data Vid1. Under such circumstance, the conference
participants can clearly identify that it is t the first
transmitter device 1210 currently operated by the presenter is
outputting the first video data Vid1, and the first transmitter
control unit 1212 does not need to show the corresponding color of
the identification code on the display device 1260. For example,
the first transmitter control unit 1212 can turn off the video
combining circuit of the first transmitter control unit 1212 to
reduce the power consumption of the first transmitter control unit
1212. Scenario (2): Both the first transmitter device 1210 and the
second transmitter device 1230 have established connection with the
receiver device 1220. The first transmitter device 1210 transmits
the first video data Vid1 to the receiver device 1220 and at the
same time the second transmitter device 1230 transmits the second
video data Vid2 to the receiver device 1220, and the display device
1260 shows the first video data Vid1 and the second video data Vid2
in the form of split screen. Under such circumstance, the
conference participants cannot clearly identify the video signal
source, and therefore the first transmitter control unit 1212 needs
to show the corresponding color of the identification code on the
display device 1260. For example, the first transmitter control
unit 1212 turns on the video combining circuit of the first
transmitter control unit 1212. With regard to the scenarios (1) and
(2) disclosed above, the first transmitter control unit 1212 can
dynamically turn off the video combining circuit of the first
transmitter control unit 1212 to dynamically reduce the power
consumption of the first transmitter control unit 1212 and achieve
power saving.
As disclosed above, step 1114 corresponds to the scenario where the
receiver control unit 1224 either receives the first video data
Vid1 from the first transmitter device 1210 or receives the second
video data Vid2 from the second transmitter device 1230. In the
present disclosure, step 1114 is exemplified by the scenario that
the receiver control unit 1224 receives the first video data Vid1
from the first transmitter device 1210. In step 1114, the first
video data Vid1 is transmitted to the receiver control unit 1224 by
the first transmitter device 1210. In step 1116, the first video
data Vid1 is shown on the display device 1260 by the receiver
control unit 1224. As shown in FIG. 11, steps 1114.about.1116 are
exemplified by the scenario that the receiver control unit 1224
receives the first video data Vid1 and does not receive the second
video data Vid2, but the embodiment is not limited thereto.
Similarly, in step 1114, when the receiver control unit 1224
receives the second video data Vid2 and does not receive the first
video data Vid1, then steps 1114.about.1116 are correspondingly
modified as follows: In step 1114, the second video data Vid2 is
transmitted to the receiver control unit 1224 by the second
transmitter device 1230; in step 1116, the second video data Vid2
is shown on the display device 1260 by the receiver control unit
1224.
In step 1104, the first video data Vid1 and the first
identification image (such as a red identification image) are
combined as a first combined video data Vid_C1 by the first
transmitter control unit 1212 of the first transmitter device 1210
according to the first identification code, and the first combined
video data Vid_C1 is outputted to the receiver device 1220 by the
first transmitter control unit 1212. When the first combined video
data Vid_C1 is shown on the display device 1260, the first combined
video data Vid_C1 corresponds to the first video region and the
first identification region adjacent to the first video region, the
first video region shows the first video data Vid1, and the first
identification region shows the first identification image. The
first video region and the first identification region of the
present embodiment are the same as the first video region 462 and
the first identification region 464 of the first embodiment of FIG.
4A.about.4C. The first indication device 1216 of the first
transmitter device 1210 shows the first identification image (such
as a red identification image). In the present embodiment, the
first transmitter control unit 1212 combines the first video data
Vid1 and a red identification image as a first combined video data
Vid_C1, such that the display device 1260 shows the corresponding
red identification image and the indicator on the first transmitter
device 1210 shows a red light corresponding to the identification
code #1. By the same analogy, the second transmitter control unit
1232 combines the second video data Vid2 and a green identification
image as a second combined video data Vid_C2 and outputs the second
combined video data Vid_C2 to the receiver device 1220, such that
the display device 1260 shows a corresponding green identification
image, and the second indication device 1236 (such as an indicator)
on the second transmitter device 1230 shows a green light
corresponding to the identification code #2.
In the present embodiment, the first identification code of the
first transmitter device and the second identification code of the
second transmitter device can be, for example, the color
identification code assigned to the transmitter device after
manufacture, but the embodiment is not limited thereto. The first
identification code can also be selected from a group consisting of
hardware serial number, user inputted information and network
address. For example, the first video source 1250 providing the
first video data Vid1 is an information processing device (such as
a notebook computer) used by the first user. The information
processing device executes an operating system (such as a Microsoft
Windows). The first identification code, such as "Peter", is user
information provided by the operating system (such as a first
user's personal information set in the console of Microsoft
Windows). The information processing device transmits "Peter" as
the first identification code to the first transmitter device 1210.
Also, the source of the first video data Vid1 is an information
processing device (such as a notebook computer) having a camera.
When the camera takes a picture of the first user, the information
processing device transmits the first user's picture as the first
identification code to the first transmitter device 1210. Also, for
example, the source of the first video data Vid1 is an information
processing device (such as a notebook computer). When the
information processing device is connected to the Internet and has
a network IP address, the information processing device transmits
the network IP address as the first identification code to the
first transmitter device 1210. Also, the first transmitter device
1210, for example, has a hardware serial number, and the first
identification code is the hardware serial number of the first
transmitter device 1210. Furthermore, for example, when the
information processing device executes a communication software
(such as Line, Skype), and obtains the personal information of the
user logging in the communication software, such as "Peter", the
information processing device transmits "Peter" as the first
identification code to the first transmitter device 1210. All of
the above information capable of identifying the information
processing device can be used as the first identification code.
When the first identification code is "Peter", the hardware serial
number or the network IP address, the first identification image is
the image of these texts. When the first identification code is the
first user's picture, the first identification image is the first
user's picture.
In the method for identifying video signal source and a wireless
presentation system using the same according to the embodiments of
the present disclosure, through the corresponding relation among
(1) the first video region 362 on the display screen of the display
device 360 (2) the first identification image in the first
identification region 464 adjacent to the first video region 362 on
the display screen of the display device 360 and (3) the first
identification image shown on the first indication device 316 of
the first transmitter device 310, the conference participants can
easily identify which presenter corresponds to the video signal
source of the first video region 362 on the split screen of the
display device 360. On the other hand, through detecting the
position of the user's input operation on the split screen of the
display device 860 by the user input device 870, when the receiver
control unit 824 determines that the user operation position is
located in the first video region 862, the receiver control unit
824 sends a prompt instruction to the first transmitter device 810
for enabling the first transmitter device 810 to emit a first
photoacoustic signal, such that the conference participants can
easily identify which presenter corresponds to the current video
signal source at the position of the user's input operation. When a
conventional method is used, the conference participants is unable
to identify which presenter's information processing device
corresponds to each video signal source of the video regions on the
split screen of the display device. Thus, the method of the present
disclosure resolves the identification failure problem encountered
in the conventional method, and helps the conference participants
to quickly identify the presenter providing the video signal source
corresponding to a particular frame on the split screen and then
easily raise questions for discussion to the right person.
While the invention has been described by way of example and in
terms of the preferred embodiment (s), it is to be understood that
the invention is not limited thereto. On the contrary, it is
intended to cover various modifications and similar arrangements
and procedures, and the scope of the appended claims therefore
should be accorded the broadest interpretation so as to encompass
all such modifications and similar arrangements and procedures.
* * * * *